Author/Authors :
Carlén، نويسنده , , L and Garpman، نويسنده , , S and Gustafsson، نويسنده , , H.-إ and Oskarsson، نويسنده , , A and Otterlund، نويسنده , , I and Stenlund، نويسنده , , E and Svensson، نويسنده , , T and Sِderstrِm، نويسنده , , K، نويسنده ,
Abstract :
We describe a new concept for two-dimensional position readout of wire chambers. The cathode is divided into small electrodes (pads) with approximately the size of the desired position resolution. The pulse height in each pad is compared with a threshold. A particle hit will always result in a cluster of three neighbouring pads fired, thus providing a very high noise immunity in spite of the simple threshold readout. Test results for single particles are reported. The results are used as the input for a simulation of the two track separation power. The simulations indicate that the concept will show excellent performance at the very high particle multiplicities prevailing in heavy ion collisions at RHIC and LHC.
